[brenellic2000]

"Longer light hours!" - ah, yes, clocks go forward an hour!! Just kidding. But buried deep in the wood, light can't penetrate and as wood is an ideal insulator, they would't know its getting warmer. It is real mystery... where's Columbo? Interior plywood is historically of birch (sweet sugary life supporting sap) bound by animal glues (edible fats). Modern ply uses inedible resins of various form and although birch is still the best furniture and aeroplane ply it will still be attacked whereas most cheaper plywoods use tropical semi-resinous timbers less susceptible to attack. BS1098 Marine Ply, for example, used timbers which are inedible to marine borers such as toredo worms and inedible waterproof resinous glues. But using marine ply for interior cabinet work is bit OTT... as is using natuarally resistant Western Red Cedar... except for clothes cabinets.. and WRC has its own allergic reactions with some people. The whole point of fungicides and insecticides to make the sugary cells inedible or not life supporting while oils/tars and waxes make it water resistant to stop it becoming life supporting... but poorly applied, it can cause 'soft-rot', a structural breakdown such as when using acid rich used engine oil as opposed to a proper exterior preservative.